Suction-valve holder.



F. G. HOBART d C. B. JAHNKE. 'SUCTION VALV;` HOLDER. APPuc/mom FILED ocr. 9. 1915.

Patented J une 12, 1917.

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FRANKL'IN (it. HIDBART t.

H lll' CHARLES B. JAHNKE, 0F BELOIT, WISCONSIN, ASSIGNORS T0 FAmBANKS, MORSE & COMPANY, vOli" CHICAGU, ILLINOIS, A CORPORATIUN OF LlDINOIS.

raeaaaa.

pecication of Letters Patent.

Patented llnne 12, 191'?.

Application led october 9, 1913. Serial No. 55,108.

5 county of Rock and State of Wisconsin,

have invented a certain new and useful lmprovement in Suction-Valve Holders, of which the following is avspecication.

The valves of gas engines, air compressors and other machines provided withl automatic suctionvalves controlling the inlet sometimes make a chattering noise due to the fact that the springs when of proper tension for controlling the valves allow the valve when lirst opened to rebound and strike the seat. The rapid repetitiony of this action when the gas is entering causes this objectionable chattering.

The object of this invention is toVv provide a vsupplementary means readily applicable to devices of this character which does away withthe chattering.

The invention consists in means for carrying out these objects, which can be easily and cheaply made and installed, satisfactorilyoperateol and not readily liable to get out of order. lt also consists in features and details of construction which will be hereafter more fully described and claimed as the specification proceeds.

Referring to the drawings, in which similar numerals indicate the saine parts throughout the several views, s

Figure 1 is a side view of mechanism illustrating this invention.

Fig. 2 is taken on the line 2 of Fig. l.

e Fig. 3 is a tront,

Fig. a is a side, and

Fig. 5 is a bottom detail view of the supplemental spring removed from the rest of the mechanlsm.

Thedrawings show walls 10, 11 and 12 oit a chamber or passageway 14 of an engine through which the gas or fluid to be controlled passes. ln the construction well lmown '1n the art, the Wall 11 is provided with a port 16 closed by valve 18 having a spindle 2O slidable through lugs 22 and 24:- on op posite sides of wall 10. Through the lower end of the spindle 20 isa pin 26 or other securing device against which the collar 28 takes bearing. Between collar 28 and the wall 10 surrounding the lug 24e-is a compression spring 30 lwhich serves to/ holdxthe v valve 18 4vupon its seat. On valves automatically opened by the suction this spring 30 is made light to ofer little resistance to opening.y When the valve is suddenly opened by the suction, a vibrating action is set up, the valve striking its seat at each movement and causing this chattering noise. ln order to obviate this diiiculty, a supplemental spring device is provided consisting,

in the form shown, of a pair of flat springs 32 and 34, having their ends bearing on the cylindrical surface 36 of the collar 28.

These springs introduce a frictional resistance on the valve 18 which revents the chattering but does not inter ere with its operation. l

In the specific embodiment shown in the drawings, these springs 32 and 34 are made integral with a supporting plate 38 having through it a perforation 40 of suiicient size to fit loosely over the lug 24 so thatthe body of this plate 38 is engaged by the upper end of spring- 30 topress it against wall 10 to consequently hold or support the springs 32 and 34 in proper relation with the entire device, the springs being held central by the collar 36 on the valve stem 20.

ln the operation of the device, when a suction is created above the valve 18, the valve is opened against the force of spring 30, the surface 36 of collar 28 sliding under the frictional resistance springs 32 and 34.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is

1. ln a device of the class described, a machine casing, a valve having a seat therein, a valve stem extending from said valve, a compression spring engaging a collar on the valve stem and bearing against a portion of the case, and asupplemental spring mechanism bearing on the sides of said collar to retard the movement of the valve stem,

v'for the purpose set forth.

2. ln a device of the'class described, a case having a port. or passageway therein to be closed,v a valve closing said port, a valve stem extending from said valve, a compression sprin engaging a collar on the valve stem and earmg a ainst a portion of the engine case, a supp emental spring mechavnism mounted on a plate interposed between the compression sprlng and the case having members engaging the lsides of said collar v .valve having a spring urging it against its seat, and another yspring' arranged to positively apply frictional resistance `to -the movement of said valve. I,

4. In a device of the class described, a

l valve, a valve seat, a spring urging the v10v valve to its seat, and a sprmg device ar ranged to apply a frictinal resistance t the movement of the valve.

-5. In a device of the class described, a valve, a valve seat, a springurging the valve to its seat, and a spring device arranged to apply a' frictional resistance to the movement of the valve, said valve seating spring reacting against the device to hold the latter in place.

6. In a device of the classdescribed, a

valve, a valve seat, a spring urging the valve to-its seat, anda second spring co-A operating with the valve to ap 1y a friction resistance to the movement o the valve.

7. In a device of the class described, a

`valve, a valve seat, a spring urging the valve toits seat, and'a second spring vcoacting directly with the valve to apply a` frictionalresistance to the movement thereof.

8. In a device of the cla-ss described, a valve, a valve seat, a spring urging the valve to its seat, and a spring device fixed relatively to the valve and arranged to apply a frictional resistance to the movement of said valve.

`9. In a device of the class described, a valve, a valve seat, a spring urging the valve to its seat, means fory guiding the valve in its movement toV and from its seat, and means for applying'a frictional resistance to 'the movement of the valve, saidv means acting to produce a frictional force in excess of that incident to a normal guiding engagement between a part of the valve and a surface of lthe guiding means. i,

In witness whereof we have hereunto subscribed our names in the presence of two witnesses.

FRANKLIN G.. HOBART. CHARLES B. JAHNKE.

Witnesses:

W'. S. ANNrN, FLORA A. CONANT.A 

